<div class="row form-group">
  <div class="col-sm-6">
    <label class="col-sm-3 control-label">Producto</label>
    <div class="col-sm-6">
      <input type='text' class='form-control' name='f_txt_producto' placeholder='Nombre del producto'>
    </div>    
  </div>

  <div class="col-sm-6">
    <label class="col-sm-3 control-label">N° de serie</label>
    <div class="col-sm-6">
      <input type='text' class='form-control' name='f_txt_numeroserie' placeholder='Número de serie'>
    </div>
  </div>
</div>

<div class="row form-group">
  <div class="col-sm-6">
    <label class="col-sm-3 control-label">N° de chasis</label>
    <div class="col-sm-6">
      <input type='text' class='form-control entero' name='f_txt_numeroChasis' placeholder='Número de chasis'>
    </div>
  </div>

  <div class="col-sm-6">
    <label class="col-sm-3 control-label">N° de motor</label>
    <div class="col-sm-6">
      <input type='text' class='form-control entero' name='f_txt_numeroMotor' placeholder='Número de motor'>
    </div>
  </div>
</div>

